کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5185950 1381091 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of nonionic surfactant on the rheological property of associative polymers in complex formulations
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Effects of nonionic surfactant on the rheological property of associative polymers in complex formulations
چکیده انگلیسی

The rheological properties of hydrophobically modified ethoxylated urethane (HEUR) were investigated in the presence of a nonionic surfactant, polyoxyethylene stearyl ether (C18(EO)20). The presence of nonionic surfactants played an important role in tuning the rheological properties of HEUR aqueous solutions. Observing both plateau modulus and viscoelastic relaxation time of HEUR aqueous solutions with varying the concentration of C18(EO)20 allowed us to demonstrate that C18(EO)20 readily interacts with the hydrophobic segments of HEUR polymers, which eventually formed a strong micellar network. Moreover, the micellar network formed at a critical concentration of C18(EO)20, ∼0.6% w/v, was indeed stable against both ionic strength and pH in the aqueous medium and complex formulations, such as a colloid suspension and an oil-in-water emulsion, thus providing more practical applications as thickeners for a wide variety of complex formulations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 48, Issue 13, 15 June 2007, Pages 3817-3821
نویسندگان
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